• DocumentCode
    3784635
  • Title

    Airborne Imaging System Using a Cryogenic 90-Ghz Receiver

  • Author

    B. Vowinkel;J.K. Peltonen;W. Reinert;K. Gruner;B. Aumiller

  • Volume
    29
  • Issue
    6
  • fYear
    1981
  • Firstpage
    535
  • Lastpage
    541
  • Abstract
    A cryogenic 90-GHz receiver has heen developed with a noise figure of 2.36 dB ((double sideband) (DSB)) and an instantaneous band-width of 1.2 GHz. The cooled front-end consists of a Schottky-barrier mixer followed by a GaAs FET IF amplifier. The radiometer is small in size and weighs only 52 kg, including the refrigerator system. It is part of an airborne imaging system, that has been fight-tested aboard a Dornier Do 28 aircraft. First test results are presented.
  • Keywords
    "Cryogenics","Microwave radiometry","Mirrors","Gallium arsenide","FETs","Refrigeration","Aircraft","High-resolution imaging","Frequency","Land surface temperature"
  • Journal_Title
    IEEE Transactions on Microwave Theory and Techniques
  • Publisher
    ieee
  • ISSN
    0018-9480
  • Type

    jour

  • DOI
    10.1109/TMTT.1981.1130388
  • Filename
    1130388
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3784635